Macpherson suspension air spring assembly and vehicle

Abstract

The invention discloses a Macpherson suspension air spring assembly and a vehicle, relates to the technical field of automobile suspension vibration reduction, and solves the problem that the service life of an air bag is affected due to non-uniform stress in the working process of the air bag because a piston is eccentrically arranged and the central axis of the piston is intersected with the central axis of a vibration damper strut. The Macpherson suspension air spring assembly comprises a mounting assembly and a spring assembly, the upper end of the air bag is connected with the lower end of the mounting assembly in a slope matching manner; the central axis of the piston and the central axis of the air bag are eccentrically arranged; the damper assembly comprises a piston rod, the upper end of the piston rod is connected with the installation assembly, the lower end of the piston rod is connected with the piston in a penetrating and inserting mode, and the central axis of the piston rod and the central axis of the piston are arranged in an eccentric mode. The vehicle comprises the Macpherson suspension air spring assembly. Due to the eccentric design of the piston and the piston rod, the stress change of the central axis of the air bag is more uniform and relieved, and the service life of the air bag is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile suspension vibration reduction, in particular to a McPherson suspension air spring assembly and a vehicle. Background Art

[0002] With the popularity of new energy vehicles, more and more models are adopting air suspension as a key design to improve ride comfort. The suspension structure of most models adopts double wishbone or multi-link form to facilitate the design of air spring assembly. However, some models need to place the engine inside the front of the vehicle like traditional fuel vehicles, resulting in cramped space in the engine compartment and little space left for suspension layout, so the suspension structure can only be adopted. Under normal circumstances, air springs only provide axial load-bearing capacity, not lateral force. Due to the structure of the McPherson suspension, air springs are required to provide lateral force, and the large rotation angle between the air spring and the frame makes it difficult for McPherson-structured models to adopt air suspension. Even the small number of McPherson suspension air spring structures currently on the market still have much room for improvement.

[0003] Prior art application number 2024110798613 describes a McPherson air spring strut assembly primarily, describing the structure of an air spring. The air spring components are rotatable relative to the mounting plate. The piston is eccentrically positioned, with its center axis at an angle to the center axis of the shock absorber. This results in uneven force distribution on the bladder and accelerated wear. Application number 2024219291154 describes the sealing principle of an air spring strut assembly with an additional air chamber at the top. The piston is also eccentrically positioned, with its center axis at an angle to the center axis of the shock absorber.

[0004] In the above structure, since the center axis of the piston and the center axis of the shock absorber strut intersect, during the up and down vibration process, the airbag is subjected to extremely uneven force in the circumferential direction of the piston. Moreover, during the up and down vibration process, the deformation and force of the cord in the airbag also change dramatically, resulting in uneven force on the piston in the circumferential direction, and problems are also prone to occur in the sealing structure inside the piston.

[0005] Therefore, this McPherson structure air spring reduces the uneven force on the piston surface caused by uneven expansion of the airbag, as well as the shortening of the airbag life. The external structure of the piston and the reliability of its sealing are particularly important. Summary of the Invention

[0006] The purpose of the present invention is to solve the above-mentioned problems. A McPherson suspension air spring assembly and a vehicle are designed to solve the problem that the airbag is easily subjected to uneven force during operation and affects its service life due to the eccentric setting of the piston and the intersection of the piston center axis and the shock absorber strut center axis.

[0007] The technical solution of the present invention to achieve the above-mentioned object is a McPherson suspension air spring assembly, comprising: Install components; An airbag, wherein the airbag is connected to the lower end of the mounting assembly, and the upper end of the airbag is connected to the lower end of the mounting assembly in an inclined plane-matching manner; A piston, the piston being arranged at the lower end of the airbag, and the lower end of the airbag being connected to the piston; The damper assembly includes a piston rod, the upper end of the piston rod is connected to the mounting assembly, the lower end is interlaced with the piston, and the central axis of the piston rod is eccentrically arranged with the central axis of the piston.

[0008] Furthermore, the installation component includes: An upper mounting seat, which can be fixedly connected to the vehicle body by fastening bolts, and has a through hole in the middle of the upper mounting seat; A lower mounting seat, wherein an annular protrusion is formed on the upper portion of the lower mounting seat, the annular protrusion passes through the through hole and is rotatably connected to the upper mounting seat, and a connecting portion is formed at the lower end of the lower mounting seat, the connecting portion is inclined, and the upper end of the airbag is connected to the connecting portion; an upper bearing assembly, the upper bearing assembly being arranged on an upper portion of the upper mounting seat; a lower bearing assembly, the lower bearing assembly being disposed between the upper mounting seat and the lower mounting seat; A pressure cover is fixed to the annular protrusion through a locking bolt and is tightly attached to the upper bearing assembly.

[0009] Furthermore, a retaining ring is formed at the bottom of the upper mounting seat, and the lower bearing assembly is located inside the retaining ring and is in close contact with the upper mounting seat and the lower mounting seat respectively.

[0010] Furthermore, the damper assembly also includes a shock absorber cylinder and a top glue, the piston is sleeved on the shock absorber cylinder, and the lower end of the piston is in contact with the retaining ring on the shock absorber cylinder, the piston and the shock absorber cylinder are in sealed contact, the top glue is arranged in the cavity in the middle of the annular protrusion, the upper end of the piston rod passes through the lower mounting seat and the top glue, and is threadedly connected to the locking nut, and the lower end of the piston rod is interlaced with the shock absorber cylinder.

[0011] Furthermore, the piston has a receiving hole that passes through from top to bottom, the central axis of the receiving hole is eccentrically arranged with the central axis of the piston, the shock absorber tube is arranged in the receiving hole, the lower end of the piston is connected to the shock absorber tube, and the central axis of the piston rod coincides with the central axis of the shock absorber tube.

[0012] Furthermore, the lower end of the piston is sealed to the shock absorber cylinder via at least two second sealing rings and three sealing gaskets.

[0013] Furthermore, a sealing cover is provided on the upper mounting seat. The sealing cover is located at the upper end of the top glue and is placed in the cavity in the middle of the annular protrusion. The sealing cover is fixed by a retaining spring after being in sealing contact with the inner wall of the annular protrusion.

[0014] Furthermore, an air path for communicating with the airbag is formed on the inner side of the lower mounting seat, the outer end of the air path is connected to a pressure-maintaining valve, the pressure-maintaining valve is threadedly connected to the lower mounting seat, and the air inlet of the pressure-maintaining valve is threadedly connected to an air nozzle.

[0015] Furthermore, a buffer block is provided at the bottom of the lower mounting seat, and the buffer block is snapped into a buffer block snap seat formed at the bottom of the lower mounting seat. A through hole is provided in the middle of the buffer block for the piston rod to pass through.

[0016] The present invention also provides a vehicle comprising the McPherson suspension air spring assembly as described above.

[0017] Compared with the prior art, the beneficial effects are: In the present invention, the upper end of the airbag is matingly connected to the lower inclined surface of the mounting assembly, while the lower end is connected to the piston. The central axis of the airbag is eccentrically aligned with the central axis of the piston, providing lateral force. The air spring can be installed at an angle, effectively utilizing the suspension chassis installation space. The upper end of the piston rod is connected to the mounting assembly, while the lower end is interpenetratingly connected to the piston. The central axis of the piston rod is eccentrically aligned with the central axis of the piston, ensuring that both central axes are parallel, resulting in uniform lateral force on the piston. The eccentric design of the piston and piston rod makes force variations on the central axis of the airbag more uniform and gradual, extending the service life of the airbag and piston.

[0018] Since the upper end of the airbag is connected to the lower end inclined surface of the mounting assembly, the central axis of the connection between the mounting assembly and the airbag forms a certain angle with the central axis of the piston, which can provide lateral force to make up for the deficiency of the air spring that can only provide axial force.

[0019] During operation, because the piston and rod axes are parallel, the airbag curls up and down along the piston's outer contour, extending downward to the curved disc at the piston's lower end. Due to the structural offset at the connection between the mounting assembly and the airbag, the airbag's lengths vary along the axis of the damper assembly. This creates an angle between the inflation axis and the damper assembly axis, resulting in uneven force distribution on the piston's outer surface. The eccentric piston structure reduces this uneven force distribution and improves the reliability of the air spring assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the cross-sectional structure of the McPherson air spring assembly; Figure 2 yes Figure 1 A magnified view of the structure at point A; Figure 3 It is a schematic diagram of the cross-sectional structure of the installation component; Figure 4 yes Figure 3 A schematic cross-sectional view of the upper bearing assembly at point B in the middle; Figure 5 yes Figure 3 A schematic cross-sectional view of the lower bearing assembly at point B in the middle; Figure 6 It is a schematic diagram of the piston structure from a top view.

[0021] In the figure, 1, locking nut; 2, mounting assembly; 201, fastening bolt; 202, locking bolt; 203, retaining ring; 204, first sealing ring; 205, top glue; 206, sealing cover; 207, pressure cover; 208, upper bearing assembly; 20801, first seat ring; 20802, first sliding ring; 20803, second seat ring; 208031, guide groove; 209, upper mounting seat; 2091, retaining ring; 210, lower bearing assembly; 21001, third seat ring; 210011, hanging buckle; 21002, upper gasket; 21003, ball bearing; 21004, lower gasket; 21005 , fourth seat ring; 210051, stop part; 211, air nozzle; 212, pressure maintaining valve; 213, lower mounting seat; 2131, annular protrusion; 21301, air path; 21302, buffer block holder; 213021, buckle; 21303, connecting part; 3, first pressure ring; 4, air bag; 5, buffer block; 6, second pressure ring; 7, dust cover; 8, piston; 801, fixing groove; 802, reinforcing rib; 803, receiving hole; 9, second sealing ring; 10, sealing gasket; 11, damper assembly; 1101, piston rod; 1102, shock absorber cylinder; 1103, retaining ring; 101, anti-slip line. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] like Figure 1-Figure 3As shown, the present invention provides a McPherson suspension air spring assembly, which primarily includes a mounting assembly 2, an airbag 4, a piston 8, and a damper assembly 11. The mounting assembly 2 is positioned above the airbag 4, and the damper assembly 11 is positioned below the piston 8. The mounting assembly 2 is sealed to the airbag 4 and the piston 8. The mounting assembly 2 is fixedly connected to the vehicle body, and the lower end of the damper assembly 11 is fixedly connected to the vehicle's steering knuckle.

[0024] You can refer to Figure 2 The mounting assembly 2 includes an upper mounting seat 209, a lower mounting seat 213, an upper bearing assembly 208, a lower bearing assembly 210, a pressure cover 207 and other components, wherein the upper mounting seat 209 is arranged on the upper part of the lower mounting seat 213, and the two are rotatably connected, the upper bearing assembly 208 is arranged on the upper part of the upper mounting seat 209, and the lower bearing assembly 210 is arranged between the upper mounting seat 209 and the lower mounting seat 213, providing a smaller friction resistance for the rotation of the upper mounting seat 209 and the lower mounting seat 213.

[0025] A circular through hole is provided in the center of the upper mounting seat 209 so as to be rotatably connected to the lower mounting seat 213. An annular retaining ring 2091 is formed on the bottom of the upper mounting seat 209 to limit the lower bearing assembly 210.

[0026] Lower mounting seat 213 also has a central through-hole. An annular protrusion 2131 is formed on the upper portion of lower mounting seat 213, surrounding the through-hole. The diameter of annular protrusion 2131 is slightly smaller than the diameter of the central through-hole in upper mounting seat 209, providing a clearance fit. Annular protrusion 2131 on lower mounting seat 213 passes through the central through-hole in upper mounting seat 209.

[0027] A groove is formed around the through hole on the upper mounting seat 209, and the upper bearing assembly 208 is located in the groove and sleeved on the annular protrusion 2131. The lower bearing assembly 210 is also sleeved on the annular protrusion 2131, located between the upper mounting seat 209 and the lower mounting seat 213, and inside the retaining ring 2091.

[0028] The cross-section of the gland 207 is shaped like a "convex" (convex) and also has a circular hole in its center. The gland 207 is secured to the annular protrusion 2131 on the lower mounting seat 213 via a locking bolt 202, which is threadedly engaged with the annular protrusion 2131. The bottom of the gland 207 is in close contact with the upper bearing assembly 208. The gland 207 restrains and secures the upper bearing assembly 208 to the upper mounting seat 209. The upper bearing assembly 208 and the lower bearing assembly 210 provide rotational support between the upper mounting seat 209 and the lower mounting seat 213.

[0029] The upper mounting seat 209 is fixedly connected to the vehicle body by fastening bolts 201. When the vehicle turns during operation, the lower mounting seat 213 of the air spring can rotate relative to the upper mounting seat 209 through the upper bearing assembly 208 and the lower bearing assembly 210. The upper bearing assembly 208 and the lower bearing assembly 210 are used to reduce friction resistance to meet the requirements of the vehicle adopting a McPherson structure.

[0030] Due to the presence of the locking bolt 202 and the pressure cover 207, the upper mounting seat 209 and the lower mounting seat 213 will not be separated, and the bottom of the lower mounting seat 213 will be connected to the airbag 4 of the air spring. This can effectively avoid the possibility of the mounting component 2 detaching from the air spring body under extreme working conditions, causing the air spring to fail.

[0031] like Figure 3 As shown, a connection portion 21303 for connecting to the airbag 4 is formed at the bottom of the lower mounting seat 213. The connection portion 21303 is annular and extends downwardly at an angle, so the lower end surface of the connection portion 21303 is also inclined.

[0032] The central axis of the entire connecting portion 21303 forms a certain angle with the central axis of the lower mounting base 213. The outer peripheral surface of the connecting portion 21303 has an anti-slip line 101. The upper end of the airbag 4 is connected to the connecting portion 21303 and is buckled onto the anti-slip line 101 of the connecting portion 21303 via the first pressure ring 3. The upper surface of the airbag 4 is an inclined surface that matches the inclined surface of the lower end of the connecting portion 21303.

[0033] like Figure 4 As shown, the upper bearing assembly 208 is mainly composed of a first seat ring 20801, a second seat ring 20803 and a first sliding ring 20802, wherein the cross-sectional shape of the first seat ring 20801 and the second seat ring 20803 is similar to a U-shape, the opening of the first seat ring 20801 faces downward, and the opening of the second seat ring 20803 faces upward, the first seat ring 20801 and the second seat ring 20803 are slightly misaligned left and right, the first seat ring 20801 covers the second seat ring 20803, and the first sliding ring 20802 is placed in the cavity formed between the first seat ring 20801 and the second seat ring 20803, and the first seat ring 20801 can slide relative to the second seat ring 20803 through the first sliding ring 20802, that is, rotate.

[0034] There is a guide groove 208031 on the second seat ring 20803. The bottom part of the first seat ring 20801 close to the outer periphery is embedded in the guide groove 208031 and slides relative to the guide groove 208031. The guide groove 208031 plays the role of limiting guidance.

[0035] During installation, the bottom of the gland 207 contacts the upper surface of the first seat ring 20801, and the bottom of the second seat ring 20803 contacts the upper mounting seat 209. When the lower mounting seat 213 rotates, the gland 207 and the first seat ring 20801 are driven to rotate.

[0036] There are grooves on the upper and lower surfaces of the first sliding ring 20802, which serve to reduce the weight and enhance the supporting strength of the first sliding ring 20802.

[0037] like Figure 5 As shown, the lower bearing assembly 210 is mainly composed of a third race 21001, a fourth race 21005, an upper washer 21002, a lower washer 21004, and balls 21003. The cross-section of the third race 21001 is similar to a U-shape. The upper surface of the third race 21001 contacts the upper mounting seat 209, and the outer peripheral surface of the third race 21001 contacts the retaining ring 2091 at the bottom of the upper mounting seat 209. The lower surface of the fourth race 21005 contacts the lower mounting seat 213.

[0038] A curved surface is formed on the opposing sides of the third race 21001 and the fourth race 21005. The cross-sections of the upper and lower washers 21002 and 21004 are similar to a Z-shape. A curved surface is formed on the opposing sides of the upper and lower washers 21002 and 21004. The curvature of this curved surface matches the spherical surface of the ball 21003. The ball 21003 is sandwiched between the upper and lower washers 21002 and 21004 and contacts this curved surface. The upper and lower washers 21002 and 21004 are offset from each other, so when they press the ball 21003 upward and downward, they can position the ball 21003. Multiple balls 21003 can be provided. When the third race 21001 and the fourth race 21005 rotate relative to each other, the sliding friction can be converted into rolling friction through the ball 21003, and the friction force is smaller.

[0039] A hook 210011 is formed on the side of the third seat ring 21001 close to the outer periphery and extends horizontally inward along the radial direction. At the same time, a stop portion 210051 is formed on the outer periphery of the fourth seat ring 21005 and extends horizontally outward along the radial direction. The hook 210011 is buckled into the bottom of the stop portion 210051 to serve as a blocking and limiting function.

[0040] The bottom of the fourth seat ring 21005 has multiple annular grooves to reduce weight. Several ribs (not shown) are also distributed along the circumference of the bottom of the fourth seat ring 21005. These ribs extend radially and divide the grooves into several smaller grooves, forming a grid pattern. This strengthens the bottom support of the fourth seat ring 21005.

[0041] The upper end of the airbag 4 is connected to the inclined surface of the connecting portion 21303 at the bottom of the lower mounting seat 213, and is clamped to the anti-slip line 101 of the connecting portion 21303 by the first pressure ring 3. The piston 8 is located at the lower end of the airbag 4, and the airbag 4 encloses the piston 8. The lower end of the airbag 4 is clamped and fixed to the anti-slip line 101 at the upper end of the piston 8 by the second pressure ring 6.

[0042] The central axis of the piston 8 and the central axis of the air bag 4 are eccentrically arranged, and the central axes of the two are parallel and do not intersect.

[0043] The damper assembly 11 is also located at the lower end of the airbag 4 and primarily consists of a piston rod 1101, a shock absorber cartridge 1102, and a top mount 205. The top mount 205 is located within the cavity between the annular protrusion 2131 on the lower mounting seat 213. The upper end of the shock absorber cartridge 1102 is positioned within the receiving hole 803 on the piston 8. The lower end of the shock absorber is fixedly connected to the vehicle's steering wheel. The upper end of the piston rod 1101 passes through the lower mounting seat 213 and the top mount 205, threadedly connected to the lock nut 1. The lower end of the piston rod 1101 is vertically intersected with the shock absorber cartridge 1102.

[0044] Figure 6 This is a top view of piston 8, where I represents the central axis of receiving hole 803, and II represents the central axis of piston 8. It can be clearly seen that the central axis of receiving hole 803 on piston 8 is eccentric to the central axis of piston 8. Consequently, the central axis of shock absorber cylinder 1102 (or the central axis of piston rod 1101) located within receiving hole 803 is also eccentric to the central axis of piston 8. These two central axes are parallel to each other, ensuring uniform lateral force on piston 8 and extending its service life.

[0045] Since the central axis of the connection portion 21303 at the bottom of the lower mounting seat 213 and the press-fitting position of the airbag 4 forms a certain angle with the central axis of the piston 8, lateral force can be provided to make up for the deficiency that the air spring can only provide axial force.

[0046] During operation, because the piston 8 is parallel to the central axis of the shock absorber cylinder 1102, the airbag 4 curls up and down along the outer contour of the piston 8, and the curled position of the lower end of the airbag 4 can extend downward to the arc-shaped disc at the lower end of the piston 8. Because the connection portion 21303 of the lower mounting seat 213 in the end cap structure and the structure of the airbag buckling point have an offset angle, the airbag has different lengths distributed around the axis of the shock absorber cylinder 1102. The axis of inflation force will have a certain angle with the axis of the shock absorber cylinder 1102, resulting in uneven force on the outer surface of the piston 8. The eccentric structure of the piston 8 will correspondingly reduce this force unevenness and improve the reliability of the air spring assembly.

[0047] like Figure 3As shown, a sealing cover 206 is provided above the top glue 205. The shape of the sealing cover 206 is "convex". The lower end of the sealing cover 206 is embedded in the cavity in the middle of the annular protrusion 2131. After the sealing cover 206 is put on the first sealing ring 204, it is placed in the lower mounting seat 213 to cover the upper end of the top glue 205, and then the retaining spring 203 is used to be clamped into the inside of the lower mounting seat 213 to fix the sealing cover 206. The sealing cover 206 plays a sealing role.

[0048] refer to Figure 1 、 Figure 3 An annular buffer block holder 21302 is provided at the bottom of the lower mounting seat 213. A buckle 213021 is formed on the buffer block holder 21302, which protrudes radially inward. The buffer block 5 is inserted into the buffer block holder 21302 and engages with the buckle 213021. The buckle 213021 prevents the buffer block 5 from being separated from the buffer block holder 21302. The buffer block 5 acts as a buffer stop, preventing the piston 8 from striking the lower mounting seat 213. A through hole is provided in the center of the buffer block 5, through which the piston rod 1101 passes.

[0049] like Figure 1 As shown, there is an air path 21301 inside the lower mounting seat 213, one end of the air path 21301 is connected to the airbag 4, and the other end is provided with a pressure maintaining valve 212, the pressure maintaining valve 212 is threadedly connected to the air inlet of the air path 21301, and the pressure maintaining valve 212 is threadedly connected to the air nozzle 211, and air is inflated into the airbag 4 through the air nozzle 211.

[0050] refer to Figure 1 、 Figure 2 A sealing structure is provided at the lower end of the receiving hole 803 on the piston 8. This sealing structure is located between the shock absorber cylinder 1102 and the piston 8 to enhance the sealing performance. The sealing structure consists of two second sealing rings 9 and three sealing gaskets 10, which are spaced apart. The shock absorber cylinder 1102 is sealed against the piston 8 via these two second sealing rings 9 and three sealing gaskets 10.

[0051] During operation, the main body of the air spring vibrates at a high frequency, and a double sealing ring and three sealing gaskets 10 are used to seal the lower end of the piston 8 and the shock absorber cylinder 1102. This can maintain good sealing performance even under high air pressure and avoid relative displacement between the piston 8 and the shock absorber cylinder 1102.

[0052] like Figure 3As shown, a retaining ring 1103 is provided at the lower end of the piston 8. The retaining ring 1103 is located below the sealing structure. After the shock absorber tube 1102 passes through the piston 8, it will contact the retaining ring 1103. A plurality of reinforcing ribs 802 are provided in the receiving hole 803. The reinforcing ribs 802 extend up and down and are evenly distributed on the inner wall of the receiving hole 803. The side surfaces of the reinforcing ribs 802 contact the surface of the shock absorber tube 1102. At the same time, a fixing groove 801 is provided on the lower end surface of the piston 8. The outer wall of the shock absorber tube 1102 has a protruding positioning portion. The positioning portion on the outer wall of the shock absorber tube 1102 is engaged with the fixing groove 801 to prevent the shock absorber tube 1102 from rotating circumferentially.

[0053] like Figure 1 As shown, a dust cover 7 is provided on the outside of the air bag 4. The dust cover 7 is installed on the extension plate of the lower end of the lower mounting seat 213 through the upper end groove. The dust cover 7 is installed on the extension plate of the piston 8 through the lower end groove. The dust cover 7 mainly protects the internal air bag 4 and plays a role in dust prevention. In addition, the dust cover 7 can also be extended and retracted together with the air bag 4.

[0054] This application also provides a vehicle including the aforementioned McPherson suspension air spring assembly. This McPherson suspension air spring assembly provides excellent vibration damping while reducing noise that may be caused by sliding friction. The eccentric design of piston 8 ensures more uniform and smooth force variations in the cords of airbag 4, extending the service life of the airbag.

[0055] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Any changes that may be made to certain parts thereof by those skilled in the art all reflect the principles of the present invention and fall within the scope of protection of the present invention.

Claims

1. A McPherson suspension air spring assembly, characterized in that: include: Install the component (2); An airbag (4), the airbag (4) being connected to the lower end of the mounting assembly (2), and the upper end of the airbag (4) being connected to the lower end of the mounting assembly (2) in a beveled fit; A piston (8), wherein the piston (8) is arranged at the lower end of the airbag (4), and the lower end of the airbag (4) is connected to the piston (8); A damper assembly (11), the damper assembly (11) includes a piston rod (1101), the upper end of the piston rod (1101) is connected to the mounting assembly (2), the lower end is interpenetratingly connected to the piston (8), and the central axis of the piston rod (1101) is eccentrically arranged with respect to the central axis of the piston (8).

2. The McPherson suspension air spring assembly according to claim 1, characterized in that: The installation component (2) comprises: An upper mounting seat (209), wherein the upper mounting seat (209) can be fixedly connected to the vehicle body via fastening bolts (201), and a through hole is provided in the middle of the upper mounting seat (209); A lower mounting seat (213), wherein an annular protrusion (2131) is formed on the upper portion of the lower mounting seat (213), wherein the annular protrusion (2131) passes through the through hole and is rotatably connected to the upper mounting seat (209), and a connecting portion (21303) is formed at the lower end of the lower mounting seat (213), wherein the connecting portion (21303) is inclined, and the upper end of the airbag (4) is connected to the connecting portion (21303); an upper bearing assembly (208), the upper bearing assembly (208) being arranged on an upper portion of the upper mounting seat (209); a lower bearing assembly (210), the lower bearing assembly (210) being disposed between the upper mounting seat (209) and the lower mounting seat (213); A pressure cover (207), wherein the pressure cover (207) is fixed to the annular protrusion (2131) via a locking bolt (202) and is in close contact with the upper bearing assembly (208).

3. The McPherson suspension air spring assembly according to claim 2, characterized in that: A retaining ring (2091) is formed at the bottom of the upper mounting seat (209), and the lower bearing assembly (210) is located inside the retaining ring (2091) and is in close contact with the upper mounting seat (209) and the lower mounting seat (213), respectively.

4. The McPherson suspension air spring assembly according to claim 2, characterized in that: The damper assembly (11) further includes a shock absorber cylinder (1102) and a top glue (205), the piston (8) is sleeved on the shock absorber cylinder (1102), and the lower end of the piston (8) is in contact with the retaining ring (1103) on the shock absorber cylinder (1102), and the piston (8) and the shock absorber cylinder (1102) are in sealed contact, the top glue (205) is arranged in a cavity in the middle of the annular protrusion (2131), the upper end of the piston rod (1101) passes through the lower mounting seat (213) and the top glue (205), and is threadedly connected to the locking nut (1), and the lower end of the piston rod (1101) is interlaced and connected to the shock absorber cylinder (1102).

5. The McPherson suspension air spring assembly according to claim 4, characterized in that: The piston (8) has a receiving hole that passes through from top to bottom. The center axis of the receiving hole is eccentrically arranged with the center axis of the piston (8). The shock absorber cylinder (1102) is arranged in the receiving hole. The lower end of the piston (8) is connected to the shock absorber cylinder (1102) through insertion, and the center axis of the piston rod (1101) coincides with the center axis of the shock absorber cylinder (1102).

6. The McPherson suspension air spring assembly according to claim 4, characterized in that: The lower end of the piston (8) and the shock absorber cylinder (1102) are sealed and installed via at least two second sealing rings (9) and three sealing gaskets (10).

7. The McPherson suspension air spring assembly according to claim 4, characterized in that: A sealing cover (206) is provided on the upper mounting seat (209). The sealing cover (206) is located at the upper end of the top glue (205) and is placed in the cavity in the middle of the annular protrusion (2131). After being in sealing contact with the inner wall of the annular protrusion (2131), it is fixed by a retaining spring (203).

8. The McPherson suspension air spring assembly according to claim 2, characterized in that: An air path (21301) for communicating with the airbag (4) is formed on the inner side of the lower mounting seat (213), and the outer end of the air path (21301) is connected to a pressure-maintaining valve (212), and the pressure-maintaining valve (212) is threadedly connected to the lower mounting seat (213), and the air inlet of the pressure-maintaining valve (212) is threadedly connected to an air nozzle (211).

9. The McPherson suspension air spring assembly according to claim 2, characterized in that: A buffer block (5) is provided at the bottom of the lower mounting seat (213), and the buffer block (5) is snapped into a buffer block snap seat (21302) formed at the bottom of the lower mounting seat (213). The middle of the buffer block (5) has a through hole for the piston rod (1101) to pass through.

10. A vehicle, characterized in that: The invention comprises a McPherson suspension air spring assembly as described in any one of claims 1 to 9.

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